Here some classic old school quick KOS.
-Tank Abbott knocking out John Matua. That was fast and brutal with Matua seizuring on the floor and Tank mocking him.
-Don "The Predato" Frye kncoking out that tub of lard Thomas Ramirez in 8 seconds (fastest KO in UFC histoy).
-Gary Goodridge delivery those rapid brutal elbows on a dead Paul Herrera.
-Pat Smith bashing Scott Morrises face into hamburger.
Here is another more modern one.
-Mark Weir quickly KOing Eugene Jackson. Second quickest knockout in UFC history at 10 seconds.